Seems to consolidate articles from a few sources (eg SOA Governance White Paper from www.soa.com) and I get the impression that the site has a significant amount of good quality content though its hard to navigate to find information.

Basically defines maturity levels and a series of capabilities that should exist at each maturity level. Quite useful for RTA as we're working on our EA capability program at the moment and this provides a good and easily understood roadmap.